with type t = Postgresql.connection
and type key = string
and type value = string
and type period = int64
type t = Postgresql.connection
The type of a handle on the backend.
default_period t returns default period after which session keys will expire. Depending on the backend, this value may vary over time.
generate ?expiry ?value t will allocate a new session in the backend
t and return its associated
key. The session will expire
expiry seconds from now, defaulting to
default_period t if one is not explicitly specified.
The key should be unique, though it may not be in order to allow implementations that use randomness or hashing to conform to this interface.
clear t key removes
key from the backend
t. The backend may choose to persist the session value beyond this call, but any subsequent calls operations involving
key should behave as if
key is not present in the backend.
get t key returns the session value, if present and unexpired, together with its expiry period as of now.
val connect : ?host:string -> ?hostaddr:string -> ?port:string -> ?dbname:string -> ?user:string -> ?password:string -> ?options:string -> ?tty:string -> ?requiressl:string -> ?conninfo:string -> ?startonly:bool -> unit -> t
Create a connection to a postgresql database.
This is an alias for the connection constructor. If you have an existing connection to a database with the appropriate tables set up, you are more than welcome to use it.